"Tuples" comprehension

Question

I can make a list comprehension. But when I try to make a Tuples comprehension code don't give me an error. Code give me:

<generator object <genexpr> at 0x739e4e4ac0>

What is it? Can I make a working Tuples comprehension?

P.S

Tuples comprehension it is like
tpl = (x*2 for x in range(3))

Answer 1

That question is answered better here than I could've done.

https://stackoverflow.com/questions/16940293/why-is-there-no-tuple-comprehension-in-JUMP_LINK__&&__python__&&__JUMP_LINK#16940351

Answer 2

Andrew Choi Interestingly, it's almost twice as fast using tuple([list comprehension]) than using tuple(generator) per Slick ' s reference:

Tuple from list comprehension:
$ python3 -m timeit "a = tuple([i for i in range(1000)])"
10000 loops, best of 3:
30.2 usec per loop

Tuple from generator:
$ python3 -m timeit "a = tuple(i for i in range(1000))"
10000 loops, best of 3:
50.4 usec per loop

Answer 3

in addition to what Slick provided. i believe the code you provided is called a generator. and from what i understand is that generators do not store the object in memory. it is used as an alternative for when a list is extremely long (100K+) for performance reasons. for a tuple, you could add “tuple” right before the paranthesis like below. it is also the solution from the link.

tpl = tuple(x*2 for x in range(3))

Answer 4

David Ashton that is interesting.